The standard heat of formation of ZnO(s) is -350.5 kJ/mole What is the heat of formation of 3 moles of ZnO(s)?

How many moles of oxygen gas are produced from the decomposition of six moles of potassium

Use the periodic table to determine how many grams of oxygen would be required to react completely with 859.0 g c2h2

Which statement justifies that hydrogen peroxide (h2o2) is a polar molecule? the o – h bond is nonpolar and the molecule is asymmetric. the o – h bond is nonpolar and the molecule is symmetric. the o – h bond is polar and the molecule is asymmetric. the o – h bond is polar and the molecule is symmetric.